- Consider the following code snippet.
Which operators does the code contain?arrayOfInts[j] > arrayOfInts[j+1]
- Consider the following code snippet.
int i = 10; int n = i++%5;
- What are the values of
i
andn
after the code is executed?
- What are the final values of
i
andn
if instead of using the postfix increment operator (i++
), you use the prefix version (++i)
)?
- To invert the value of a
boolean
, which operator would you use?
- Which operator is used to compare two values,
=
or==
?
- Explain the following code sample:
result = someCondition ? value1 : value2;
Check your answers
- Change the following program to use compound assignments:
class ArithmeticDemo { public static void main (String[] args){ int result = 1 + 2; // result is now 3 System.out.println(result); result = result - 1; // result is now 2 System.out.println(result); result = result * 2; // result is now 4 System.out.println(result); result = result / 2; // result is now 2 System.out.println(result); result = result + 8; // result is now 10 result = result % 7; // result is now 3 System.out.println(result); } }- In the following program, explain why the value "6" is printed twice in a row:
class PrePostDemo { public static void main(String[] args){ int i = 3; i++; System.out.println(i); // "4" ++i; System.out.println(i); // "5" System.out.println(++i); // "6" System.out.println(i++); // "6" System.out.println(i); // "7" } }